Superbi Squalo is an assassin and the second-in-command of the Varia, the Vongola family's independent assassin squad. He is most notable for his long silver hair, and is always seen wearing his Varia uniform in both the anime and the manga.

He is a very loud character, and has a tendency to shout "VOOOI!!!" (the Italian version of the plural "You") before saying something or while in battle.

Squalo is known as one of the "Vongola's Sword Masters", other being Yamamoto Takeshi. For that reason, Yamamoto somewhat admires him as a awesome swordsman. He was also Yamamoto's tutor.

He is supposed to represent the sin of Pride since his name, Superbi, comes from "superbia", Latin term for pride.